fix: CI workflow

Author: luchobonatti

.github/workflows/ci.yml

@@ -14,6 +14,8 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: 20
+      - name: Install pnpm
+        run: npm install -g pnpm
       - run: pnpm install
       - run: pnpm run build
       - run: pnpm test 

.github/workflows/release.yml

@@ -14,6 +14,8 @@ jobs:
         with:
           node-version: 20
           registry-url: 'https://registry.npmjs.org/'
+      - name: Install pnpm
+        run: npm install -g pnpm
       - run: pnpm install
       - run: pnpm run build
       - run: npx semantic-release